pacer

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun a horse used to set the pace in racing
noun a horse trained to a special gait in which both feet on one side leave the ground together

From pace + -er.

"The old pacer--the old pacer!" — The Bishop of Cottontown: A Story of the Southern Cotton Mills, John Trotwood Moore
"Pacers," said she, "Storm and The Friar." — Aladdin & Co.: A Romance of Yankee Magic, Herbert Quick
While the Pacer steamed away till lost to view. — Wild Animals I Have Known, Ernest Thompson Seton

pacemaker, pacesetter

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